PEAK® OET Extended Life Orange 50/50 Pre-Diluted Antifreeze/ Coolant for North American Vehicles, 3.78 Liters
I have never seen a specific Prestone HOAT formulation coolant.One of the great things about Si-OAT is it can be safely mixed with other ethylene glycol coolants.
Agree with @JeepmanI would NEVER want to use whatever Dexcool variant that came factory in the mid 90s and early 00s GM vehicles.
You aren't suppose to admit that. Your name is now in The Book of Shame. You have a record. You're labelled. A pill user, no less. It does come in liquid form for easier concealment.In our Grand Prix, I flushed all of the crap out that I could after it had almost killed the engine plugging it up. I replace it with yellow universal coolant around 2007-2008. The engine had nearly overheated and had a leaking head gasket or cracked head from that ordeal. I had to use stop leak pills to fix it, after putting in the new coolant (and lower intake manifold gaskets/T-stat were replaced).
A head gasket leak is a "tall order". A radiator seam leak = more likely success.@Jeepman In the spirit of your question to @Road Ripper about head gasket stop leak, a good friend who’s an excellent hobbyist mechanic recently gave it a try in his Dodge/RAM truck (I think it’s a 5.7).
He diagnosed a leaky head gasket and thought “what the eff’ and gave it a try.
He said it worked for him for ~1 month and the symptoms came back. He ended up fixing it the traditional, non-pill in a can, sort of way.
What Is Radiator Stop Leak? Radiator stop leak is a common additive that is designed to seal minor leaks in your radiator and leaks in-between components. While it's an aftermarket additive, some car manufacturers use it on new radiators to improve the seal between new radiator components.
MIXING COOLANT IN THE PROPER RATIO
In general, we mix coolant concentrates with deionized or demineralized water in a 50/50 ratio to protect the system against freezing down to -37°C. Ready to use coolants are pre-mixed products that are much easier to use and help vehicle or engine owners avoid using the wrong ratio.
I stick with demineralized water in the 5 gallon jugs, available at gas stops, grocery stores, etc. here. Distilled water isn't neutral, so they say.Use only high purity water such as distilled or deionized water when mixing the water/engine coolant (antifreeze) solution. The use of lower quality water will reduce the amount of corrosion protection in the engine cooling system.
But please – PLEASE! – do not use distilled water in your automotive cooling system.
Apparently not, the water still has minerals in it.Is water out of a refrigerator that has a charcoal filter sufficient for a cooling system? We have city water that is tested annually and is very pure compared to the crappy well water around here.
Softened water is a different story.When filtering water, charcoal carbon filters are most effective at removing chlorine, particles such as sediment, volatile organic compounds (VOCs), taste and odor. They are not effective at removing minerals, salts, and dissolved inorganic substances.
Sodium is okay, calcium chloride is bad.Home water softeners, also called ion exchange units, are appliances that remove calcium, magnesium, and other minerals from drinking water. Resin beads inside the softener trap the calcium and magnesium and exchange them for sodium or potassium.
There seems to be a perceptual issue with regard to the usage of softened water in cooling systems by auto enthusiasts. Many mistakenly believe that because salt is added to water softeners, then softened water must contain salt, a substance of course known to be very corrosive. Nothing could be further from the truth. The salt you add to a water softener is NaCl, or sodium chloride.
During the softening process, only the sodium ion is exchanged into the water. Therefore, softened water does NOT contain corrosive salt.
What are the benefits of using softened water? Soft water lacks most of the impurities of tap water, meaning it far less conductive (i.e. less damage from electrolysis) and will not form deposits (i.e. less possibility of overheating).
The sodium and chloride in the road salt break apart water molecules, lowering its freezing point and melting treacherous ice. While the sodium dissolves after coming in contact with water, chloride remains and is highly corrosive to the metal that makes up 90% of your vehicle.